Let's put this in perspective a little, my WOZ had been flawless for months, finally due to room constraints I decided to lend it to a good friend of mine who does all my playfield touchups for me, I move pins all the time so I know how to handle them, take it to my friends place in my trailer so it all that needed to be done was fold the head, only a 20 min drive door to door, get there, set it up, it doesn't work Never did figure out the exact cause, but after fiddling with and re-seating connectors it came back to life.
So not really surprising that occasionally a trip in a box halfway around the world can cause some problems to occur.